I recently achieved an iron cross, and I've been performing them regularly during my straight-arm strength sessions since then. I'm taking it slow and doing 2x4s holds per session, twice a week. I'm planning on maintaining this steady state for several weeks before attempting to add more volume. I've noticed that they tend to make my elbows pretty sore afterwards. I don't get any sharp pains, but my brachialis and biceps in particular get quite sore, and so does the part of the triceps near my elbow. Foam-rolling and massaging help to alleviate the soreness, but it does last for several days.
My intuition is that I should be feeling some pretty intense soreness in these areas given the new load being placed on them, but I figured it was a good idea to double check. Is this soreness a sign that I should back off, or is it pretty much normal when first learning a cross to have a lot of soreness around the elbows?